Florence + The Machine capped off a week of promotional appearances in the UK in support of recently-released album Ceremonials by appearing on last night’s results episode of The X Factor. And if Flo’s vocals while belting “Shake It Out” betrayed a bit of celebratory exuberance, there’s good reason — Ceremonials debuted atop the UK album chart published earlier in the day, after selling 90,000 copies in Welch’s home country. Watch the singer and her amazing light-up dress wow the crowd below.